Dcs Transmitter - Samsung SCH-i830 Service Manual

7-4-4. DCS Transmitter

TX ON (5 Level)
Yes
C1231
<= 25dBm
No
C1221
<= 22dBm
No
C1232
<= 20dBm
No
R1109
<= 1.0V
Yes
Check U1102
END
Yes
Resolder C1208, U1201
Yes
Yes
No
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Check U1202
pin4 = H, pin6 = L
No
Resolder DUF1200
R1113 = H
No
7-39
Flow Chart of Troubleshooting
Yes
Change or Resolder U1202
Check SPDT
control circuit
Yes
Resolder or Change
PAM1101
Check +VBATT or PAM
control signal